i tried trophy rocks with crazy mixed results. the one that i put near my house was a bust. they never touched it. in about 3 months, the weather made it disappear. even after that, they left the ground alone where it lay. the one i put out at my son's house was the complete opposite. within a month it was gone and they still continue to root and paw at the soil where it was. i'm scratching my head on this one!?!?!?!?!?